HYDROPHILIC, ANTI-FOGGING, AND ANTI-STAINING THIN FILM AND METHOD FOR PREPARATION THEREOF

摘要

The present invention relates to a metallic oxide film which exhibits a high hardness and is good in terms of the transparency, and which exhibits a hydrophilic property, a defogging and dirtproof property and a self-cleaning property over a long period of time, a production process for the same, and a hydrophilic mirror comprising this hydrophilic metallic oxide film. The present invention is characterized in that the superficial shapes of a metallic oxide film formed on a substrate surface is such that the superficial shapes of the metallic oxide film are such that an arithmetic average roughness Ra is 4-8 nm, a maximum roughness (maximum irregularity difference) Rz is 40-70 nm, a 10-point average roughness RzJIS is 20-60 nm, and pitches between irregularities are 10-300 nm, the Ra, Rz, RzJIS and pitches measured by an atomic force microscope. The metallic oxide film of such superficial shapes is useful as a hydrophilic mirror, and can be used appropriately as automotive outer mirrors.